| |
| /*! |
| *************************************************************************** |
| * \file transform8x8.c |
| * |
| * \brief |
| * 8x8 transform functions |
| * |
| * \author |
| * Main contributors (see contributors.h for copyright, address and affiliation details) |
| * - Yuri Vatis <vatis@hhi.de> |
| * - Jan Muenster <muenster@hhi.de> |
| * |
| * \date |
| * 12. October 2003 |
| ************************************************************************** |
| */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include "transform8x8.h" |
| |
| #define Q_BITS_8 16 |
| #define DQ_BITS_8 6 |
| |
| const int quant_coef8[6][8][8] = |
| { |
| { |
| {13107, 12222, 16777, 12222, 13107, 12222, 16777, 12222}, |
| {12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428}, |
| {16777, 15481, 20972, 15481, 16777, 15481, 20972, 15481}, |
| {12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428}, |
| {13107, 12222, 16777, 12222, 13107, 12222, 16777, 12222}, |
| {12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428}, |
| {16777, 15481, 20972, 15481, 16777, 15481, 20972, 15481}, |
| {12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428} |
| }, |
| { |
| {11916, 11058, 14980, 11058, 11916, 11058, 14980, 11058}, |
| {11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826}, |
| {14980, 14290, 19174, 14290, 14980, 14290, 19174, 14290}, |
| {11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826}, |
| {11916, 11058, 14980, 11058, 11916, 11058, 14980, 11058}, |
| {11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826}, |
| {14980, 14290, 19174, 14290, 14980, 14290, 19174, 14290}, |
| {11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826} |
| }, |
| { |
| {10082, 9675, 12710, 9675, 10082, 9675, 12710, 9675}, |
| {9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943}, |
| {12710, 11985, 15978, 11985, 12710, 11985, 15978, 11985}, |
| {9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943}, |
| {10082, 9675, 12710, 9675, 10082, 9675, 12710, 9675}, |
| {9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943}, |
| {12710, 11985, 15978, 11985, 12710, 11985, 15978, 11985}, |
| {9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943} |
| }, |
| { |
| {9362, 8931, 11984, 8931, 9362, 8931, 11984, 8931}, |
| {8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228}, |
| {11984, 11259, 14913, 11259, 11984, 11259, 14913, 11259}, |
| {8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228}, |
| {9362, 8931, 11984, 8931, 9362, 8931, 11984, 8931}, |
| {8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228}, |
| {11984, 11259, 14913, 11259, 11984, 11259, 14913, 11259}, |
| {8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228} |
| }, |
| { |
| {8192, 7740, 10486, 7740, 8192, 7740, 10486, 7740}, |
| {7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346}, |
| {10486, 9777, 13159, 9777, 10486, 9777, 13159, 9777}, |
| {7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346}, |
| {8192, 7740, 10486, 7740, 8192, 7740, 10486, 7740}, |
| {7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346}, |
| {10486, 9777, 13159, 9777, 10486, 9777, 13159, 9777}, |
| {7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346} |
| }, |
| { |
| {7282, 6830, 9118, 6830, 7282, 6830, 9118, 6830}, |
| {6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428}, |
| {9118, 8640, 11570, 8640, 9118, 8640, 11570, 8640}, |
| {6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428}, |
| {7282, 6830, 9118, 6830, 7282, 6830, 9118, 6830}, |
| {6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428}, |
| {9118, 8640, 11570, 8640, 9118, 8640, 11570, 8640}, |
| {6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428} |
| } |
| }; |
| |
| |
| |
| const int dequant_coef8[6][8][8] = |
| { |
| { |
| {20, 19, 25, 19, 20, 19, 25, 19}, |
| {19, 18, 24, 18, 19, 18, 24, 18}, |
| {25, 24, 32, 24, 25, 24, 32, 24}, |
| {19, 18, 24, 18, 19, 18, 24, 18}, |
| {20, 19, 25, 19, 20, 19, 25, 19}, |
| {19, 18, 24, 18, 19, 18, 24, 18}, |
| {25, 24, 32, 24, 25, 24, 32, 24}, |
| {19, 18, 24, 18, 19, 18, 24, 18} |
| }, |
| { |
| {22, 21, 28, 21, 22, 21, 28, 21}, |
| {21, 19, 26, 19, 21, 19, 26, 19}, |
| {28, 26, 35, 26, 28, 26, 35, 26}, |
| {21, 19, 26, 19, 21, 19, 26, 19}, |
| {22, 21, 28, 21, 22, 21, 28, 21}, |
| {21, 19, 26, 19, 21, 19, 26, 19}, |
| {28, 26, 35, 26, 28, 26, 35, 26}, |
| {21, 19, 26, 19, 21, 19, 26, 19} |
| }, |
| { |
| {26, 24, 33, 24, 26, 24, 33, 24}, |
| {24, 23, 31, 23, 24, 23, 31, 23}, |
| {33, 31, 42, 31, 33, 31, 42, 31}, |
| {24, 23, 31, 23, 24, 23, 31, 23}, |
| {26, 24, 33, 24, 26, 24, 33, 24}, |
| {24, 23, 31, 23, 24, 23, 31, 23}, |
| {33, 31, 42, 31, 33, 31, 42, 31}, |
| {24, 23, 31, 23, 24, 23, 31, 23} |
| }, |
| { |
| {28, 26, 35, 26, 28, 26, 35, 26}, |
| {26, 25, 33, 25, 26, 25, 33, 25}, |
| {35, 33, 45, 33, 35, 33, 45, 33}, |
| {26, 25, 33, 25, 26, 25, 33, 25}, |
| {28, 26, 35, 26, 28, 26, 35, 26}, |
| {26, 25, 33, 25, 26, 25, 33, 25}, |
| {35, 33, 45, 33, 35, 33, 45, 33}, |
| {26, 25, 33, 25, 26, 25, 33, 25} |
| }, |
| { |
| {32, 30, 40, 30, 32, 30, 40, 30}, |
| {30, 28, 38, 28, 30, 28, 38, 28}, |
| {40, 38, 51, 38, 40, 38, 51, 38}, |
| {30, 28, 38, 28, 30, 28, 38, 28}, |
| {32, 30, 40, 30, 32, 30, 40, 30}, |
| {30, 28, 38, 28, 30, 28, 38, 28}, |
| {40, 38, 51, 38, 40, 38, 51, 38}, |
| {30, 28, 38, 28, 30, 28, 38, 28} |
| }, |
| { |
| {36, 34, 46, 34, 36, 34, 46, 34}, |
| {34, 32, 43, 32, 34, 32, 43, 32}, |
| {46, 43, 58, 43, 46, 43, 58, 43}, |
| {34, 32, 43, 32, 34, 32, 43, 32}, |
| {36, 34, 46, 34, 36, 34, 46, 34}, |
| {34, 32, 43, 32, 34, 32, 43, 32}, |
| {46, 43, 58, 43, 46, 43, 58, 43}, |
| {34, 32, 43, 32, 34, 32, 43, 32} |
| } |
| |
| }; |
| |
| |
| |
| #ifdef _NEW_8x8_ARRAYS_INCLUDED_ |
| //! single scan pattern |
| const byte SNGL_SCAN8x8[64][2] = { |
| {0,0}, {1,0}, {0,1}, {0,2}, {1,1}, {2,0}, {3,0}, {2,1}, {1,2}, {0,3}, {0,4}, {1,3}, {2,2}, {3,1}, {4,0}, {5,0}, |
| {4,1}, {3,2}, {2,3}, {1,4}, {0,5}, {0,6}, {1,5}, {2,4}, {3,3}, {4,2}, {5,1}, {6,0}, {7,0}, {6,1}, {5,2}, {4,3}, |
| {3,4}, {2,5}, {1,6}, {0,7}, {1,7}, {2,6}, {3,5}, {4,4}, {5,3}, {6,2}, {7,1}, {7,2}, {6,3}, {5,4}, {4,5}, {3,6}, |
| {2,7}, {3,7}, {4,6}, {5,5}, {6,4}, {7,3}, {7,4}, {6,5}, {5,6}, {4,7}, {5,7}, {6,6}, {7,5}, {7,6}, {6,7}, {7,7} |
| }; |
| |
| //! field scan pattern |
| const byte FIELD_SCAN8x8[64][2] = { |
| {0,0}, {0,1}, {0,2}, {1,0}, {1,1}, {0,3}, {0,4}, {1,2}, {2,0}, {2,1}, {1,3}, {0,5}, {0,6}, {1,4}, {2,2}, {3,0}, |
| {3,1}, {2,3}, {1,5}, {0,7}, {1,6}, {2,4}, {3,2}, {4,0}, {4,1}, {3,3}, {2,5}, {1,7}, {2,6}, {3,4}, {4,2}, {5,0}, |
| {5,1}, {4,3}, {3,5}, {2,7}, {3,6}, {4,4}, {5,2}, {6,0}, {6,1}, {5,3}, {4,5}, {3,7}, {4,6}, {5,4}, {6,2}, {7,0}, |
| {7,1}, {6,3}, {5,5}, {4,7}, {5,6}, {6,4}, {7,2}, {7,3}, {6,5}, {5,7}, {6,6}, {7,4}, {7,5}, {6,7}, {7,6}, {7,7} |
| }; |
| |
| |
| //! array used to find expencive coefficients |
| const byte COEFF_COST8x8[64] = |
| { |
| 3,3,3,3,2,2,2,2,2,2,2,2,1,1,1,1, |
| 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |
| }; |
| |
| #endif |
| |
| // Notation for comments regarding prediction and predictors. |
| // The pels of the 4x4 block are labelled a..p. The predictor pels above |
| // are labelled A..H, from the left I..P, and from above left X, as follows: |
| // |
| // Z A B C D E F G H I J K L M N O P |
| // Q a1 b1 c1 d1 e1 f1 g1 h1 |
| // R a2 b2 c2 d2 e2 f2 g2 h2 |
| // S a3 b3 c3 d3 e3 f3 g3 h3 |
| // T a4 b4 c4 d4 e4 f4 g4 h4 |
| // U a5 b5 c5 d5 e5 f5 g5 h5 |
| // V a6 b6 c6 d6 e6 f6 g6 h6 |
| // W a7 b7 c7 d7 e7 f7 g7 h7 |
| // X a8 b8 c8 d8 e8 f8 g8 h8 |
| |
| |
| // Predictor array index definitions |
| #define P_Z (PredPel[0]) |
| #define P_A (PredPel[1]) |
| #define P_B (PredPel[2]) |
| #define P_C (PredPel[3]) |
| #define P_D (PredPel[4]) |
| #define P_E (PredPel[5]) |
| #define P_F (PredPel[6]) |
| #define P_G (PredPel[7]) |
| #define P_H (PredPel[8]) |
| #define P_I (PredPel[9]) |
| #define P_J (PredPel[10]) |
| #define P_K (PredPel[11]) |
| #define P_L (PredPel[12]) |
| #define P_M (PredPel[13]) |
| #define P_N (PredPel[14]) |
| #define P_O (PredPel[15]) |
| #define P_P (PredPel[16]) |
| #define P_Q (PredPel[17]) |
| #define P_R (PredPel[18]) |
| #define P_S (PredPel[19]) |
| #define P_T (PredPel[20]) |
| #define P_U (PredPel[21]) |
| #define P_V (PredPel[22]) |
| #define P_W (PredPel[23]) |
| #define P_X (PredPel[24]) |
| |
| /*! |
| ************************************************************************ |
| * \brief |
| * Make intra 8x8 prediction according to all 9 prediction modes. |
| * The routine uses left and upper neighbouring points from |
| * previous coded blocks to do this (if available). Notice that |
| * inaccessible neighbouring points are signalled with a negative |
| * value in the predmode array . |
| * |
| * \par Input: |
| * Starting point of current 8x8 block image posision |
| * |
| ************************************************************************ |
| */ |
| int intrapred8x8( struct img_par *img, //!< image parameters |
| int b8) |
| |
| { |
| int i,j; |
| int s0; |
| imgpel PredPel[25]; // array of predictor pels |
| imgpel **imgY = dec_picture->imgY; // For MB level frame/field coding tools -- set default to imgY |
| |
| int mb_nr=img->current_mb_nr; |
| |
| PixelPos pix_a[8]; |
| PixelPos pix_b, pix_c, pix_d; |
| |
| int block_available_up; |
| int block_available_left; |
| int block_available_up_left; |
| int block_available_up_right; |
| int img_block_x = (img->mb_x)*4 + 2*(b8%2); |
| int img_block_y = (img->mb_y)*4 + 2*(b8/2); |
| int ioff = (b8%2)*8; |
| int joff = (b8/2)*8; |
| int jpos0 = joff , jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3; |
| int jpos4 = joff + 4, jpos5 = joff + 5, jpos6 = joff + 6, jpos7 = joff + 7; |
| int ipos0 = ioff , ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3; |
| int ipos4 = ioff + 4, ipos5 = ioff + 5, ipos6 = ioff + 6, ipos7 = ioff + 7; |
| int jpos, ipos; |
| imgpel *pred_pels; |
| |
| byte predmode = img->ipredmode[img_block_y][img_block_x]; |
| |
| for (i=0;i<8;i++) |
| { |
| getNeighbour(mb_nr, ioff -1 , joff +i , IS_LUMA, &pix_a[i]); |
| } |
| |
| getNeighbour(mb_nr, ioff , joff -1 , IS_LUMA, &pix_b); |
| getNeighbour(mb_nr, ioff +8 , joff -1 , IS_LUMA, &pix_c); |
| getNeighbour(mb_nr, ioff -1 , joff -1 , IS_LUMA, &pix_d); |
| |
| pix_c.available = pix_c.available &&!(ioff == 8 && joff == 8); |
| |
| if (active_pps->constrained_intra_pred_flag) |
| { |
| for (i=0, block_available_left=1; i<8;i++) |
| block_available_left &= pix_a[i].available ? img->intra_block[pix_a[i].mb_addr]: 0; |
| block_available_up = pix_b.available ? img->intra_block [pix_b.mb_addr] : 0; |
| block_available_up_right = pix_c.available ? img->intra_block [pix_c.mb_addr] : 0; |
| block_available_up_left = pix_d.available ? img->intra_block [pix_d.mb_addr] : 0; |
| } |
| else |
| { |
| block_available_left = pix_a[0].available; |
| block_available_up = pix_b.available; |
| block_available_up_right = pix_c.available; |
| block_available_up_left = pix_d.available; |
| } |
| |
| // *left_available = block_available_left; |
| // *up_available = block_available_up; |
| // *all_available = block_available_up && block_available_left && block_available_up_left; |
| |
| // form predictor pels |
| // form predictor pels |
| if (block_available_up) |
| { |
| pred_pels = &imgY[pix_b.pos_y][pix_b.pos_x]; |
| P_A = pred_pels[0]; |
| P_B = pred_pels[1]; |
| P_C = pred_pels[2]; |
| P_D = pred_pels[3]; |
| P_E = pred_pels[4]; |
| P_F = pred_pels[5]; |
| P_G = pred_pels[6]; |
| P_H = pred_pels[7]; |
| } |
| else |
| { |
| P_A = P_B = P_C = P_D = P_E = P_F = P_G = P_H = img->dc_pred_value_luma; |
| } |
| |
| if (block_available_up_right) |
| { |
| pred_pels = &imgY[pix_c.pos_y][pix_c.pos_x]; |
| P_I = pred_pels[0]; |
| P_J = pred_pels[1]; |
| P_K = pred_pels[2]; |
| P_L = pred_pels[3]; |
| P_M = pred_pels[4]; |
| P_N = pred_pels[5]; |
| P_O = pred_pels[6]; |
| P_P = pred_pels[7]; |
| |
| } |
| else |
| { |
| P_I = P_J = P_K = P_L = P_M = P_N = P_O = P_P = P_H; |
| } |
| |
| if (block_available_left) |
| { |
| P_Q = imgY[pix_a[0].pos_y][pix_a[0].pos_x]; |
| P_R = imgY[pix_a[1].pos_y][pix_a[1].pos_x]; |
| P_S = imgY[pix_a[2].pos_y][pix_a[2].pos_x]; |
| P_T = imgY[pix_a[3].pos_y][pix_a[3].pos_x]; |
| P_U = imgY[pix_a[4].pos_y][pix_a[4].pos_x]; |
| P_V = imgY[pix_a[5].pos_y][pix_a[5].pos_x]; |
| P_W = imgY[pix_a[6].pos_y][pix_a[6].pos_x]; |
| P_X = imgY[pix_a[7].pos_y][pix_a[7].pos_x]; |
| } |
| else |
| { |
| P_Q = P_R = P_S = P_T = P_U = P_V = P_W = P_X = img->dc_pred_value_luma; |
| } |
| |
| if (block_available_up_left) |
| { |
| P_Z = imgY[pix_d.pos_y][pix_d.pos_x]; |
| } |
| else |
| { |
| P_Z = img->dc_pred_value_luma; |
| } |
| |
| LowPassForIntra8x8Pred(&(P_Z), block_available_up_left, block_available_up, block_available_left); |
| |
| //img->mpr[y][x] |
| switch(predmode) |
| { |
| case DC_PRED: |
| s0 = 0; |
| if (block_available_up && block_available_left) |
| { |
| // no edge |
| s0 = (P_A + P_B + P_C + P_D + P_E + P_F + P_G + P_H + P_Q + P_R + P_S + P_T + P_U + P_V + P_W + P_X + 8) >> 4; |
| } |
| else if (!block_available_up && block_available_left) |
| { |
| // upper edge |
| s0 = (P_Q + P_R + P_S + P_T + P_U + P_V + P_W + P_X + 4) >> 3; |
| } |
| else if (block_available_up && !block_available_left) |
| { |
| // left edge |
| s0 = (P_A + P_B + P_C + P_D + P_E + P_F + P_G + P_H + 4) >> 3; |
| } |
| else //if (!block_available_up && !block_available_left) |
| { |
| // top left corner, nothing to predict from |
| s0 = img->dc_pred_value_luma; |
| } |
| for(j = joff; j < joff + 2*BLOCK_SIZE; j++) |
| for(i = ioff; i < ioff + 2*BLOCK_SIZE; i++) |
| img->mpr[j][i] = (imgpel) s0; |
| break; |
| |
| case VERT_PRED: |
| if (!block_available_up) |
| printf ("warning: Intra_8x8_Vertical prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| for (i=0; i < 2*BLOCK_SIZE; i++) |
| { |
| ipos = i+ioff; |
| img->mpr[jpos0][ipos] = |
| img->mpr[jpos1][ipos] = |
| img->mpr[jpos2][ipos] = |
| img->mpr[jpos3][ipos] = |
| img->mpr[jpos4][ipos] = |
| img->mpr[jpos5][ipos] = |
| img->mpr[jpos6][ipos] = |
| img->mpr[jpos7][ipos] = (imgpel) (&P_A)[i]; |
| } |
| break; |
| case HOR_PRED: |
| if (!block_available_left) |
| printf ("warning: Intra_8x8_Horizontal prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| for (j=0; j < 2*BLOCK_SIZE; j++) |
| { |
| jpos = j + joff; |
| img->mpr[jpos][ipos0] = |
| img->mpr[jpos][ipos1] = |
| img->mpr[jpos][ipos2] = |
| img->mpr[jpos][ipos3] = |
| img->mpr[jpos][ipos4] = |
| img->mpr[jpos][ipos5] = |
| img->mpr[jpos][ipos6] = |
| img->mpr[jpos][ipos7] = (imgpel) (&P_Q)[j]; |
| } |
| break; |
| |
| case DIAG_DOWN_LEFT_PRED: |
| if (!block_available_up) |
| printf ("warning: Intra_8x8_Diagonal_Down_Left prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| // Mode DIAG_DOWN_LEFT_PRED |
| img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); |
| img->mpr[jpos1][ipos0] = |
| img->mpr[jpos0][ipos1] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); |
| img->mpr[jpos2][ipos0] = |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos0][ipos2] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); |
| img->mpr[jpos3][ipos0] = |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos0][ipos3] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); |
| img->mpr[jpos4][ipos0] = |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos0][ipos4] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); |
| img->mpr[jpos5][ipos0] = |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos0][ipos5] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); |
| img->mpr[jpos6][ipos0] = |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos0][ipos6] = (imgpel) ((P_G + P_I + 2*(P_H) + 2) >> 2); |
| img->mpr[jpos7][ipos0] = |
| img->mpr[jpos6][ipos1] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos1][ipos6] = |
| img->mpr[jpos0][ipos7] = (imgpel) ((P_H + P_J + 2*(P_I) + 2) >> 2); |
| img->mpr[jpos7][ipos1] = |
| img->mpr[jpos6][ipos2] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos2][ipos6] = |
| img->mpr[jpos1][ipos7] = (imgpel) ((P_I + P_K + 2*(P_J) + 2) >> 2); |
| img->mpr[jpos7][ipos2] = |
| img->mpr[jpos6][ipos3] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos3][ipos6] = |
| img->mpr[jpos2][ipos7] = (imgpel) ((P_J + P_L + 2*(P_K) + 2) >> 2); |
| img->mpr[jpos7][ipos3] = |
| img->mpr[jpos6][ipos4] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos4][ipos6] = |
| img->mpr[jpos3][ipos7] = (imgpel) ((P_K + P_M + 2*(P_L) + 2) >> 2); |
| img->mpr[jpos7][ipos4] = |
| img->mpr[jpos6][ipos5] = |
| img->mpr[jpos5][ipos6] = |
| img->mpr[jpos4][ipos7] = (imgpel) ((P_L + P_N + 2*(P_M) + 2) >> 2); |
| img->mpr[jpos7][ipos5] = |
| img->mpr[jpos6][ipos6] = |
| img->mpr[jpos5][ipos7] = (imgpel) ((P_M + P_O + 2*(P_N) + 2) >> 2); |
| img->mpr[jpos7][ipos6] = |
| img->mpr[jpos6][ipos7] = (imgpel) ((P_N + P_P + 2*(P_O) + 2) >> 2); |
| img->mpr[jpos7][ipos7] = (imgpel) ((P_O + 3*(P_P) + 2) >> 2); |
| break; |
| |
| case VERT_LEFT_PRED: |
| if (!block_available_up) |
| printf ("warning: Intra_4x4_Vertical_Left prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_B + 1) >> 1); |
| img->mpr[jpos0][ipos1] = |
| img->mpr[jpos2][ipos0] = (imgpel) ((P_B + P_C + 1) >> 1); |
| img->mpr[jpos0][ipos2] = |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos4][ipos0] = (imgpel) ((P_C + P_D + 1) >> 1); |
| img->mpr[jpos0][ipos3] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos6][ipos0] = (imgpel) ((P_D + P_E + 1) >> 1); |
| img->mpr[jpos0][ipos4] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos6][ipos1] = (imgpel) ((P_E + P_F + 1) >> 1); |
| img->mpr[jpos0][ipos5] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos6][ipos2] = (imgpel) ((P_F + P_G + 1) >> 1); |
| img->mpr[jpos0][ipos6] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos6][ipos3] = (imgpel) ((P_G + P_H + 1) >> 1); |
| img->mpr[jpos0][ipos7] = |
| img->mpr[jpos2][ipos6] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos6][ipos4] = (imgpel) ((P_H + P_I + 1) >> 1); |
| img->mpr[jpos2][ipos7] = |
| img->mpr[jpos4][ipos6] = |
| img->mpr[jpos6][ipos5] = (imgpel) ((P_I + P_J + 1) >> 1); |
| img->mpr[jpos4][ipos7] = |
| img->mpr[jpos6][ipos6] = (imgpel) ((P_J + P_K + 1) >> 1); |
| img->mpr[jpos6][ipos7] = (imgpel) ((P_K + P_L + 1) >> 1); |
| img->mpr[jpos1][ipos0] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos3][ipos0] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos5][ipos0] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos7][ipos0] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos7][ipos1] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos7][ipos2] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); |
| img->mpr[jpos1][ipos6] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos7][ipos3] = (imgpel) ((P_G + P_I + 2*P_H + 2) >> 2); |
| img->mpr[jpos1][ipos7] = |
| img->mpr[jpos3][ipos6] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos7][ipos4] = (imgpel) ((P_H + P_J + 2*P_I + 2) >> 2); |
| img->mpr[jpos3][ipos7] = |
| img->mpr[jpos5][ipos6] = |
| img->mpr[jpos7][ipos5] = (imgpel) ((P_I + P_K + 2*P_J + 2) >> 2); |
| img->mpr[jpos5][ipos7] = |
| img->mpr[jpos7][ipos6] = (imgpel) ((P_J + P_L + 2*P_K + 2) >> 2); |
| img->mpr[jpos7][ipos7] = (imgpel) ((P_K + P_M + 2*P_L + 2) >> 2); |
| break; |
| |
| |
| case DIAG_DOWN_RIGHT_PRED: |
| if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) |
| printf ("warning: Intra_8x8_Diagonal_Down_Right prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| // Mode DIAG_DOWN_RIGHT_PRED |
| img->mpr[jpos7][ipos0] = (imgpel) ((P_X + P_V + 2*(P_W) + 2) >> 2); |
| img->mpr[jpos6][ipos0] = |
| img->mpr[jpos7][ipos1] = (imgpel) ((P_W + P_U + 2*(P_V) + 2) >> 2); |
| img->mpr[jpos5][ipos0] = |
| img->mpr[jpos6][ipos1] = |
| img->mpr[jpos7][ipos2] = (imgpel) ((P_V + P_T + 2*(P_U) + 2) >> 2); |
| img->mpr[jpos4][ipos0] = |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos6][ipos2] = |
| img->mpr[jpos7][ipos3] = (imgpel) ((P_U + P_S + 2*(P_T) + 2) >> 2); |
| img->mpr[jpos3][ipos0] = |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos6][ipos3] = |
| img->mpr[jpos7][ipos4] = (imgpel) ((P_T + P_R + 2*(P_S) + 2) >> 2); |
| img->mpr[jpos2][ipos0] = |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos6][ipos4] = |
| img->mpr[jpos7][ipos5] = (imgpel) ((P_S + P_Q + 2*(P_R) + 2) >> 2); |
| img->mpr[jpos1][ipos0] = |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos6][ipos5] = |
| img->mpr[jpos7][ipos6] = (imgpel) ((P_R + P_Z + 2*(P_Q) + 2) >> 2); |
| img->mpr[jpos0][ipos0] = |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos6][ipos6] = |
| img->mpr[jpos7][ipos7] = (imgpel) ((P_Q + P_A + 2*(P_Z) + 2) >> 2); |
| img->mpr[jpos0][ipos1] = |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos5][ipos6] = |
| img->mpr[jpos6][ipos7] = (imgpel) ((P_Z + P_B + 2*(P_A) + 2) >> 2); |
| img->mpr[jpos0][ipos2] = |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos4][ipos6] = |
| img->mpr[jpos5][ipos7] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); |
| img->mpr[jpos0][ipos3] = |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos3][ipos6] = |
| img->mpr[jpos4][ipos7] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); |
| img->mpr[jpos0][ipos4] = |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos2][ipos6] = |
| img->mpr[jpos3][ipos7] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); |
| img->mpr[jpos0][ipos5] = |
| img->mpr[jpos1][ipos6] = |
| img->mpr[jpos2][ipos7] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); |
| img->mpr[jpos0][ipos6] = |
| img->mpr[jpos1][ipos7] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); |
| img->mpr[jpos0][ipos7] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); |
| break; |
| |
| case VERT_RIGHT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ |
| if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) |
| printf ("warning: Intra_8x8_Vertical_Right prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| img->mpr[jpos0][ipos0] = |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos6][ipos3] = (imgpel) ((P_Z + P_A + 1) >> 1); |
| img->mpr[jpos0][ipos1] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos6][ipos4] = (imgpel) ((P_A + P_B + 1) >> 1); |
| img->mpr[jpos0][ipos2] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos6][ipos5] = (imgpel) ((P_B + P_C + 1) >> 1); |
| img->mpr[jpos0][ipos3] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos6][ipos6] = (imgpel) ((P_C + P_D + 1) >> 1); |
| img->mpr[jpos0][ipos4] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos4][ipos6] = |
| img->mpr[jpos6][ipos7] = (imgpel) ((P_D + P_E + 1) >> 1); |
| img->mpr[jpos0][ipos5] = |
| img->mpr[jpos2][ipos6] = |
| img->mpr[jpos4][ipos7] = (imgpel) ((P_E + P_F + 1) >> 1); |
| img->mpr[jpos0][ipos6] = |
| img->mpr[jpos2][ipos7] = (imgpel) ((P_F + P_G + 1) >> 1); |
| img->mpr[jpos0][ipos7] = (imgpel) ((P_G + P_H + 1) >> 1); |
| img->mpr[jpos1][ipos0] = |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos7][ipos3] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos7][ipos4] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos7][ipos5] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos7][ipos6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos5][ipos6] = |
| img->mpr[jpos7][ipos7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos3][ipos6] = |
| img->mpr[jpos5][ipos7] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| img->mpr[jpos1][ipos6] = |
| img->mpr[jpos3][ipos7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| img->mpr[jpos1][ipos7] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); |
| img->mpr[jpos2][ipos0] = |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos6][ipos2] = (imgpel) ((P_R + P_Z + 2*P_Q + 2) >> 2); |
| img->mpr[jpos3][ipos0] = |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos7][ipos2] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); |
| img->mpr[jpos4][ipos0] = |
| img->mpr[jpos6][ipos1] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); |
| img->mpr[jpos5][ipos0] = |
| img->mpr[jpos7][ipos1] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); |
| img->mpr[jpos6][ipos0] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); |
| img->mpr[jpos7][ipos0] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); |
| break; |
| |
| case HOR_DOWN_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ |
| if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) |
| printf ("warning: Intra_8x8_Horizontal_Down prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| img->mpr[jpos0][ipos0] = |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos3][ipos6] = (imgpel) ((P_Q + P_Z + 1) >> 1); |
| img->mpr[jpos1][ipos0] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos4][ipos6] = (imgpel) ((P_R + P_Q + 1) >> 1); |
| img->mpr[jpos2][ipos0] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos5][ipos6] = (imgpel) ((P_S + P_R + 1) >> 1); |
| img->mpr[jpos3][ipos0] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos6][ipos6] = (imgpel) ((P_T + P_S + 1) >> 1); |
| img->mpr[jpos4][ipos0] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos6][ipos4] = |
| img->mpr[jpos7][ipos6] = (imgpel) ((P_U + P_T + 1) >> 1); |
| img->mpr[jpos5][ipos0] = |
| img->mpr[jpos6][ipos2] = |
| img->mpr[jpos7][ipos4] = (imgpel) ((P_V + P_U + 1) >> 1); |
| img->mpr[jpos6][ipos0] = |
| img->mpr[jpos7][ipos2] = (imgpel) ((P_W + P_V + 1) >> 1); |
| img->mpr[jpos7][ipos0] = (imgpel) ((P_X + P_W + 1) >> 1); |
| img->mpr[jpos0][ipos1] = |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos3][ipos7] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos4][ipos7] = (imgpel) ((P_Z + P_R + 2*P_Q + 2) >> 2); |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos5][ipos7] = (imgpel) ((P_Q + P_S + 2*P_R + 2) >> 2); |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos6][ipos7] = (imgpel) ((P_R + P_T + 2*P_S + 2) >> 2); |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos6][ipos5] = |
| img->mpr[jpos7][ipos7] = (imgpel) ((P_S + P_U + 2*P_T + 2) >> 2); |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos6][ipos3] = |
| img->mpr[jpos7][ipos5] = (imgpel) ((P_T + P_V + 2*P_U + 2) >> 2); |
| img->mpr[jpos6][ipos1] = |
| img->mpr[jpos7][ipos3] = (imgpel) ((P_U + P_W + 2*P_V + 2) >> 2); |
| img->mpr[jpos7][ipos1] = (imgpel) ((P_V + P_X + 2*P_W + 2) >> 2); |
| img->mpr[jpos0][ipos2] = |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos2][ipos6] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); |
| img->mpr[jpos0][ipos3] = |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos2][ipos7] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| img->mpr[jpos0][ipos4] = |
| img->mpr[jpos1][ipos6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| img->mpr[jpos0][ipos5] = |
| img->mpr[jpos1][ipos7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| img->mpr[jpos0][ipos6] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| img->mpr[jpos0][ipos7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| break; |
| |
| case HOR_UP_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ |
| if (!block_available_left) |
| printf ("warning: Intra_8x8_Horizontal_Up prediction mode not allowed at mb %d\n",img->current_mb_nr); |
| |
| img->mpr[jpos0][ipos0] = (imgpel) ((P_Q + P_R + 1) >> 1); |
| img->mpr[jpos1][ipos0] = |
| img->mpr[jpos0][ipos2] = (imgpel) ((P_R + P_S + 1) >> 1); |
| img->mpr[jpos2][ipos0] = |
| img->mpr[jpos1][ipos2] = |
| img->mpr[jpos0][ipos4] = (imgpel) ((P_S + P_T + 1) >> 1); |
| img->mpr[jpos3][ipos0] = |
| img->mpr[jpos2][ipos2] = |
| img->mpr[jpos1][ipos4] = |
| img->mpr[jpos0][ipos6] = (imgpel) ((P_T + P_U + 1) >> 1); |
| img->mpr[jpos4][ipos0] = |
| img->mpr[jpos3][ipos2] = |
| img->mpr[jpos2][ipos4] = |
| img->mpr[jpos1][ipos6] = (imgpel) ((P_U + P_V + 1) >> 1); |
| img->mpr[jpos5][ipos0] = |
| img->mpr[jpos4][ipos2] = |
| img->mpr[jpos3][ipos4] = |
| img->mpr[jpos2][ipos6] = (imgpel) ((P_V + P_W + 1) >> 1); |
| img->mpr[jpos6][ipos0] = |
| img->mpr[jpos5][ipos2] = |
| img->mpr[jpos4][ipos4] = |
| img->mpr[jpos3][ipos6] = (imgpel) ((P_W + P_X + 1) >> 1); |
| img->mpr[jpos4][ipos6] = |
| img->mpr[jpos4][ipos7] = |
| img->mpr[jpos5][ipos4] = |
| img->mpr[jpos5][ipos5] = |
| img->mpr[jpos5][ipos6] = |
| img->mpr[jpos5][ipos7] = |
| img->mpr[jpos6][ipos2] = |
| img->mpr[jpos6][ipos3] = |
| img->mpr[jpos6][ipos4] = |
| img->mpr[jpos6][ipos5] = |
| img->mpr[jpos6][ipos6] = |
| img->mpr[jpos6][ipos7] = |
| img->mpr[jpos7][ipos0] = |
| img->mpr[jpos7][ipos1] = |
| img->mpr[jpos7][ipos2] = |
| img->mpr[jpos7][ipos3] = |
| img->mpr[jpos7][ipos4] = |
| img->mpr[jpos7][ipos5] = |
| img->mpr[jpos7][ipos6] = |
| img->mpr[jpos7][ipos7] = (imgpel) P_X; |
| img->mpr[jpos6][ipos1] = |
| img->mpr[jpos5][ipos3] = |
| img->mpr[jpos4][ipos5] = |
| img->mpr[jpos3][ipos7] = (imgpel) ((P_W + 3*P_X + 2) >> 2); |
| img->mpr[jpos5][ipos1] = |
| img->mpr[jpos4][ipos3] = |
| img->mpr[jpos3][ipos5] = |
| img->mpr[jpos2][ipos7] = (imgpel) ((P_X + P_V + 2*P_W + 2) >> 2); |
| img->mpr[jpos4][ipos1] = |
| img->mpr[jpos3][ipos3] = |
| img->mpr[jpos2][ipos5] = |
| img->mpr[jpos1][ipos7] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); |
| img->mpr[jpos3][ipos1] = |
| img->mpr[jpos2][ipos3] = |
| img->mpr[jpos1][ipos5] = |
| img->mpr[jpos0][ipos7] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); |
| img->mpr[jpos2][ipos1] = |
| img->mpr[jpos1][ipos3] = |
| img->mpr[jpos0][ipos5] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); |
| img->mpr[jpos1][ipos1] = |
| img->mpr[jpos0][ipos3] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); |
| img->mpr[jpos0][ipos1] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); |
| break; |
| |
| default: |
| printf("Error: illegal intra_4x4 prediction mode: %d\n",predmode); |
| return SEARCH_SYNC; |
| break; |
| } |
| return DECODING_OK; |
| } |
| |
| |
| |
| /*! |
| ************************************************************************************* |
| * \brief |
| * Prefiltering for Intra8x8 prediction |
| ************************************************************************************* |
| */ |
| void LowPassForIntra8x8Pred(imgpel *PredPel, int block_up_left, int block_up, int block_left) |
| { |
| int i; |
| imgpel LoopArray[25]; |
| |
| memcpy(&LoopArray[0], &PredPel[0], 25 * sizeof(imgpel)); |
| |
| if(block_up) |
| { |
| if(block_up_left) |
| { |
| LoopArray[1] = (((&P_Z)[0] + ((&P_Z)[1]<<1) + (&P_Z)[2] + 2)>>2); |
| } |
| else |
| LoopArray[1] = (((&P_Z)[1] + ((&P_Z)[1]<<1) + (&P_Z)[2] + 2)>>2); |
| |
| |
| for(i = 2; i <16; i++) |
| { |
| LoopArray[i] = (((&P_Z)[i-1] + ((&P_Z)[i]<<1) + (&P_Z)[i+1] + 2)>>2); |
| } |
| LoopArray[16] = ((P_P + (P_P<<1) + P_O + 2)>>2); |
| } |
| |
| if(block_up_left) |
| { |
| |
| if(block_up && block_left) |
| { |
| LoopArray[0] = ((P_Q + (P_Z<<1) + P_A +2)>>2); |
| } |
| else |
| { |
| if(block_up) |
| LoopArray[0] = ((P_Z + (P_Z<<1) + P_A +2)>>2); |
| else |
| if(block_left) |
| LoopArray[0] = ((P_Z + (P_Z<<1) + P_Q +2)>>2); |
| } |
| |
| } |
| |
| if(block_left) |
| { |
| if(block_up_left) |
| LoopArray[17] = ((P_Z + (P_Q<<1) + P_R + 2)>>2); |
| else |
| LoopArray[17] = ((P_Q + (P_Q<<1) + P_R + 2)>>2); |
| |
| for(i = 18; i <24; i++) |
| { |
| LoopArray[i] = (((&P_Z)[i-1] + ((&P_Z)[i]<<1) + (&P_Z)[i+1] + 2)>>2); |
| } |
| LoopArray[24] = ((P_W + (P_X<<1) + P_X + 2)>>2); |
| } |
| |
| memcpy(&PredPel[0], &LoopArray[0], 25 * sizeof(imgpel)); |
| } |
| |
| |
| |
| /*! |
| *********************************************************************** |
| * \brief |
| * Inverse 8x8 transformation |
| *********************************************************************** |
| */ |
| void itrans8x8(struct img_par *img, //!< image parameters |
| int ioff, //!< index to 4x4 block |
| int joff) //!< |
| { |
| int i,j; |
| int m6[8][8]; |
| Boolean lossless_qpprime = (Boolean) ((img->qp + img->bitdepth_luma_qp_scale)==0 && img->lossless_qpprime_flag==1); |
| static int ipos; |
| static int a[8], b[8]; |
| |
| if(lossless_qpprime) |
| { |
| for( j = joff; j < joff + 8; j++) |
| { |
| for( i = ioff; i < ioff + 8; i++) |
| img->m7[j][i] = iClip1(img->max_imgpel_value, (img->m7[j][i]+(long)img->mpr[j][i])); |
| } |
| } |
| else |
| { |
| int *m7; |
| for( i = 0; i < 8; i++) |
| { |
| m7 = &img->m7[joff + i][ioff]; |
| a[0] = m7[0] + m7[4]; |
| a[4] = m7[0] - m7[4]; |
| a[2] = (m7[2]>>1) - m7[6]; |
| a[6] = m7[2] + (m7[6]>>1); |
| |
| b[0] = a[0] + a[6]; |
| b[2] = a[4] + a[2]; |
| b[4] = a[4] - a[2]; |
| b[6] = a[0] - a[6]; |
| |
| a[1] = -m7[3] + m7[5] - m7[7] - (m7[7]>>1); |
| a[3] = m7[1] + m7[7] - m7[3] - (m7[3]>>1); |
| a[5] = -m7[1] + m7[7] + m7[5] + (m7[5]>>1); |
| a[7] = m7[3] + m7[5] + m7[1] + (m7[1]>>1); |
| |
| b[1] = a[1] + (a[7]>>2); |
| b[7] = -(a[1]>>2) + a[7]; |
| b[3] = a[3] + (a[5]>>2); |
| b[5] = (a[3]>>2) - a[5]; |
| |
| m6[0][i] = b[0] + b[7]; |
| m6[1][i] = b[2] + b[5]; |
| m6[2][i] = b[4] + b[3]; |
| m6[3][i] = b[6] + b[1]; |
| m6[4][i] = b[6] - b[1]; |
| m6[5][i] = b[4] - b[3]; |
| m6[6][i] = b[2] - b[5]; |
| m6[7][i] = b[0] - b[7]; |
| } |
| for( i = 0; i < 8; i++) |
| { |
| ipos = ioff + i; |
| m7 = m6[i]; |
| a[0] = m7[0] + m7[4]; |
| a[4] = m7[0] - m7[4]; |
| a[2] = (m7[2]>>1) - m7[6]; |
| a[6] = m7[2] + (m7[6]>>1); |
| |
| b[0] = a[0] + a[6]; |
| b[2] = a[4] + a[2]; |
| b[4] = a[4] - a[2]; |
| b[6] = a[0] - a[6]; |
| |
| a[1] = -m7[3] + m7[5] - m7[7] - (m7[7]>>1); |
| a[3] = m7[1] + m7[7] - m7[3] - (m7[3]>>1); |
| a[5] = -m7[1] + m7[7] + m7[5] + (m7[5]>>1); |
| a[7] = m7[3] + m7[5] + m7[1] + (m7[1]>>1); |
| |
| b[1] = a[1] + (a[7]>>2); |
| b[7] = -(a[1]>>2) + a[7]; |
| b[3] = a[3] + (a[5]>>2); |
| b[5] = (a[3]>>2) - a[5]; |
| |
| img->m7[joff + 0][ipos] = b[0] + b[7]; |
| img->m7[joff + 1][ipos] = b[2] + b[5]; |
| img->m7[joff + 2][ipos] = b[4] + b[3]; |
| img->m7[joff + 3][ipos] = b[6] + b[1]; |
| img->m7[joff + 4][ipos] = b[6] - b[1]; |
| img->m7[joff + 5][ipos] = b[4] - b[3]; |
| img->m7[joff + 6][ipos] = b[2] - b[5]; |
| img->m7[joff + 7][ipos] = b[0] - b[7]; |
| } |
| |
| for( j = joff; j < joff + 8; j++) |
| { |
| for( i = ioff; i < ioff + 8; i++) |
| img->m7[j][i] = iClip1(img->max_imgpel_value, |
| rshift_rnd_sf((img->m7[j][i]+((long)img->mpr[j][i] << DQ_BITS_8)),DQ_BITS_8)); |
| } |
| } |
| } |
